1 : <?php
2 : /*--------------------------------------------------------------------------+
3 : This file is part of eStudy.
4 : news/classes/class.NewsCategoryForum.inc.php
5 : - Modulgruppe: News
6 : - Beschreibung: Klasse für die News-Kategorie Forum.
7 : - Version: 1.1.2.4, 24/01/08
8 : - Autor(en): Corinna Kropf <corinna.kropf@mni.fh-giessen.de>
9 : +---------------------------------------------------------------------------+
10 : This program is free software; you can redistribute it and/or
11 : modify it under the terms of the GNU General Public License
12 : as published by the Free Software Foundation; either version 2
13 : of the License, or any later version.
14 : +---------------------------------------------------------------------------+
15 : This program is distributed in the hope that it will be useful,
16 : but WITHOUT ANY WARRANTY; without even the implied warranty of
17 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 : GNU General Public License for more details.
19 : You should have received a copy of the GNU General Public License
20 : along with this program; if not, write to the Free Software
21 : Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 : +--------------------------------------------------------------------------*/
23 :
24 1 : require_once ("class.newscategory.inc.php");
25 :
26 : /**
27 : * Klasse für die News-Kategorie Forum.
28 : * @package eStudy.News
29 : * @version 1.1.2.4, 24/01/08
30 : * @author Corinna Kropf <corinna.kropf@mni.fh-giessen.de>
31 : */
32 1 : class NewsCategoryForum extends NewsCategory
33 : {
34 : /**
35 : * Cache Objekt zur Abfrage von Modulinstallationen (Performance Tweak)
36 : * @var array
37 : */
38 : private $installCacheObject;
39 : /**
40 : * Flag fuer die Anzeige der News-Eintraege
41 : * @var bool
42 : */
43 : private $dark;
44 : /**
45 : * HTML-Template
46 : * @var Template
47 : */
48 : private $forumThreadTemplate;
49 : /**
50 : * HTML-Template
51 : * @var Template
52 : */
53 : private $forumThreadPostTemplate;
54 : /**
55 : * @var int
56 : */
57 : private $userID;
58 : /**
59 : * Konstruktor
60 : * @param $userID int
61 : */
62 : public function __construct($catID, $courses, $userID, $categorySettings = null, $installCacheObject = null)
63 : {
64 0 : parent::__construct($catID, $courses, $categorySettings);
65 0 : $this->installCacheObject = $installCacheObject;
66 0 : $this->userID = $userID;
67 0 : $this->forumThreadTemplate = new Template(PATH_TO_ROOT."news/templates/newsforumthread.html");
68 0 : $this->forumThreadPostTemplate = new Template(PATH_TO_ROOT."news/templates/newsforumthreadpost.html");
69 0 : }
70 : /**
71 : * Überschreibt die Methode der Oberklasse,
72 : * um weitere Initialisierungen vor der Ausgabe zu machen.
73 : * @see NewsCategory
74 : */
75 : public function echoNews($courseID, $usergroup = null)
76 : {
77 0 : $this->dark = false;
78 0 : parent::echoNews($courseID, $usergroup);
79 0 : }
80 : /**
81 : * Muss angepasst werden, falls Modulgruppen umbenannt werden!
82 : * @see NewsCategory
83 : */
84 : public function isInstalled($courseID)
85 : {
86 0 : return (Utilities::isInstalled("forum", $courseID, $this->installCacheObject)
87 0 : || Utilities::isInstalled("fotoforum", $courseID, $this->installCacheObject));
88 : }
89 : /**
90 : * @see NewsCategory
91 : */
92 : public function canSelectPeriod() {
93 0 : return true;
94 : }
95 : /**
96 : * @see NewsCategory
97 : */
98 : public function getNewsHeaderTitle($courseID = null, $type = null) {
99 0 : if(isset($this->news))
100 0 : {
101 0 : $newsCount = $this->news["count"];
102 0 : if ($newsCount > 1) $title = sprintf( $this->translate->_("%1\$s Forenbeiträge"), $newsCount);
103 0 : elseif ($newsCount == 1) $title = $this->translate->_("1 Forumbeitrag");
104 0 : }
105 0 : else $title = $this->translate->_("Keine neuen Forenbeiträge");
106 :
107 0 : return $title;
108 : }
109 :
110 : public function createQueryCacheObject($from, $to, $lastvisit, $usergroup, $courseID) {
111 0 : global $db;
112 0 : $userID = data::toMysql($_SESSION["userid"]);
113 : $sql = "SELECT courseID FROM forum_ban "
114 0 : ."WHERE userID='".Data::toMysql($this->userID)."' "
115 0 : ."AND (banexpire>".time() ." OR banexpire=0)";
116 0 : $bans = $db->get_col($sql);
117 0 : $courseBans = null;
118 0 : if ($bans != null) {
119 0 : $courseBans = array();
120 0 : foreach ($bans as $ban)
121 0 : $courseBans[$ban->courseID] = "banned";
122 0 : }
123 :
124 0 : $this->queryCacheObject = array();
125 :
126 0 : $timefrom = $this->getPeriod($courseID, $from) ;
127 0 : $timeto = $to;
128 :
129 : // Alle Kurse des Benutzers und deren Kurs-Berechtugungen
130 0 : if ($usergroup != ADMIN) {
131 : $sql = "SELECT courseID, IF(differentUsergroup>0, differentUsergroup, "
132 : . $usergroup
133 0 : . ") AS usergroup FROM user_course JOIN courses ON courseID=ID WHERE userID='$userID' AND closed='0' "
134 0 : ."UNION SELECT 0 AS courseID, $usergroup AS usergroup";
135 0 : } else {
136 : $sql = "SELECT ID AS courseID, 1 AS usergroup FROM courses WHERE closed = 0 "
137 0 : ."UNION SELECT 0 AS courseID, $usergroup AS usergroup";
138 : }
139 0 : $courseUserGroupResults = $db->get_results($sql);
140 0 : $courseGroups = array();
141 0 : foreach ($courseUserGroupResults as $courseUserGroupResult)
142 0 : $courseGroups[$courseUserGroupResult->courseID] = $courseUserGroupResult->usergroup;
143 : // print_r($courseUserGroupResult);return null;
144 : // Hier werden zunächst alle Boards ausgelesen, da der Benutzer unterschiedliche Berechtigungen
145 : // in einem Kurs haben kann. Die Berechtigung für den Boardzugriff wird später geprüft.
146 0 : $boardsNotReadableByStudents = null;
147 0 : if ($usergroup == STUDENT || $usergroup == ALUMNUS || $usergroup == SCHUELER || $usergroup == GAST) {
148 0 : $viewableGalleries = $db->get_col("SELECT album_id FROM photogallery_rights WHERE usr_id='"
149 0 : .Data::toMysql($this->userID)."' AND (view=1 OR admin=1)");
150 0 : if ($db->num_rows) $viewableGalleries = "AND album_id NOT IN (".implode(",", $viewableGalleries) .") ";
151 0 : else $viewableGalleries = "";
152 0 : $results = $db->get_results("SELECT forum_groupboard.boardid "
153 : ."FROM forum_groupboard JOIN forum_board ON forum_groupboard.boardid=forum_board.boardid "
154 0 : ."WHERE accessmask LIKE '0%' AND is_photogallery=0 "."GROUP BY boardid "."UNION "."SELECT album_id "
155 0 : ."FROM photogallery_rights "."WHERE usr_id=0 "."AND view=0 $viewableGalleries"."GROUP BY album_id");
156 0 : if ($db->num_rows) {
157 0 : $boardsNotReadableByStudents = array();
158 0 : foreach ($results as $result)
159 0 : $boardsNotReadableByStudents[$result->boardid] = $result->boardid;
160 0 : }
161 0 : }
162 : $sql = "select b.categoryid, b.boardid, b.is_photogallery, p.posttime, p.postlastedittime, b.boardname, t.threadtopic, p.postid, p.posttext, "
163 : ."p.userID, t.threadid, l.lastvisitedtime FROM forum_post p "
164 0 : ."LEFT JOIN forum_thread t ON (t.threadid = p.threadid) "
165 0 : ."LEFT JOIN forum_lastvisited l ON (l.boardid = t.boardid AND l.userID =".Data::toMysql($this->userID).") "
166 0 : ."LEFT JOIN forum_board b ON (b.boardid = t.boardid) "
167 : //."WHERE ( ((posttime>='$timefrom') AND (posttime<='$timeto')) OR "
168 0 : ."WHERE ( (posttime>='$timefrom') OR "
169 : //." ((postlastedittime>='$timefrom') AND (postlastedittime<='$timeto')) ) "
170 0 : ." (postlastedittime>='$timefrom') ) "
171 0 : ." AND boarddisabled=0 ";
172 0 : if ($usergroup != ADMIN)
173 0 : $sql .= "AND categoryid IN (SELECT courseID FROM user_course JOIN courses ON (courseID=ID) WHERE userID='$userID' AND closed='0' UNION SELECT 0) ";
174 0 : $sql .= "ORDER BY posttime DESC";
175 : //$text = data::toMysql($sql);
176 : //$db->query("insert into temp(str) values('$text')");
177 0 : $posts = $db->get_results($sql);
178 :
179 0 : $boards = array();
180 0 : if ($posts != null) {
181 0 : foreach ($posts as $post) {
182 : // Kurs geschlossen
183 0 : if (!array_key_exists($post->categoryid, $courseGroups))
184 0 : continue;
185 0 : if ($post->categoryid == 0)
186 0 : $courseUserGroup = $usergroup;
187 : else
188 0 : $courseUserGroup = $courseGroups[$post->categoryid];
189 : // array: board,thread,postid ==> boardtitle,posttext,userid,posttitle
190 : // Boards auf die Benutzer keinen Zugriff hat entfernen
191 0 : if ($courseUserGroup == STUDENT || $courseUserGroup == ALUMNUS || $courseUserGroup == SCHUELER || $courseUserGroup == GAST) {
192 0 : if (is_array($boardsNotReadableByStudents) && isset($boardsNotReadableByStudents[$post->boardid]))
193 0 : continue;
194 0 : }
195 0 : if (is_array($courseBans) && array_key_exists($post->categoryid, $courseBans))
196 0 : continue;
197 :
198 0 : if (isset($boards[$post->categoryid]['count']))
199 0 : $boards[$post->categoryid]['count'] = $boards[$post->categoryid]['count'] + 1;
200 : else
201 0 : $boards[$post->categoryid]['count'] = 1;
202 :
203 0 : $boards[$post->categoryid][$post->boardid]['boardName'] = $post->boardname;
204 0 : $boards[$post->categoryid][$post->boardid]['isPhotoGallery'] = $post->is_photogallery;
205 0 : $boards[$post->categoryid][$post->boardid]['threads'][$post->threadid]['threadTopic'] = $post->threadtopic;
206 0 : $boards[$post->categoryid][$post->boardid]['threads'][$post->threadid]['threadID'] = $post->threadid;
207 0 : $boards[$post->categoryid][$post->boardid]['threads'][$post->threadid]['lastVisitedTime'] = $post->lastvisitedtime;
208 0 : $boards[$post->categoryid][$post->boardid]['threads'][$post->threadid]['posts'][$post->postid]['postid'] = $post->postid;
209 0 : $boards[$post->categoryid][$post->boardid]['threads'][$post->threadid]['posts'][$post->postid]['postTime'] = $post->posttime;
210 0 : $boards[$post->categoryid][$post->boardid]['threads'][$post->threadid]['posts'][$post->postid]['postText'] = $post->posttext;
211 0 : $boards[$post->categoryid][$post->boardid]['threads'][$post->threadid]['posts'][$post->postid]['userID'] = $post->userID;
212 0 : $boards[$post->categoryid][$post->boardid]['threads'][$post->threadid]['posts'][$post->postid]['postLastEditTime'] = $post->postlastedittime;
213 0 : $this->users[$boards[$post->categoryid][$post->boardid]['threads'][$post->threadid]['posts'][$post->postid]['userID']] =
214 0 : $boards[$post->categoryid][$post->boardid]['threads'][$post->threadid]['posts'][$post->postid]['userID'];
215 0 : }
216 0 : }
217 :
218 0 : $this->queryCacheObject["messagesPerPage"] = $db->get_var("SELECT keyvalue FROM forum_registry WHERE keyname='vars_m_amount'");
219 0 : $this->queryCacheObject["cacheObject"] = $boards;
220 0 : return true;
221 : }
222 :
223 : /**
224 : * @see NewsCategory
225 : */
226 : protected function getNewsByPeriod($courseID, $from, $to, $lastvisit, $usergroup = null) {
227 : // Neue Forenbeitraege
228 0 : if (isset($courseID) && isset($from) && isset($to) /*&& isset($this->coursePreferences)*/ && isset($usergroup) && isset($this->userID))
229 0 : {
230 0 : if (!is_numeric($courseID) || !is_numeric($to) || !is_numeric($from) || !is_numeric($usergroup))
231 0 : return null;
232 :
233 0 : $this->news = null;
234 :
235 0 : if ($_SESSION["course"] == 0 || $this->queryCacheObject != null) {
236 0 : if ($this->queryCacheObject == null)
237 0 : $this->createQueryCacheObject($from, $to, $lastvisit, $usergroup, $courseID);
238 :
239 0 : if ($this->queryCacheObject == null)
240 0 : return null;
241 0 : $cacheObject = $this->queryCacheObject["cacheObject"];
242 0 : if (!array_key_exists($courseID, $cacheObject))
243 0 : return null;
244 0 : $boards = $cacheObject[$courseID];
245 0 : $boardCount = count($boards);
246 0 : if ($boardCount == 0)
247 0 : $this->news = null;
248 : else {
249 0 : $this->news["messagesPerPage"] = $this->queryCacheObject["messagesPerPage"];
250 0 : $this->news["data"] = $boards;
251 0 : $this->news["count"] = $boards['count'];
252 : }
253 :
254 0 : return $this->news;
255 : }
256 :
257 0 : global $db;
258 : $sql = "SELECT userID FROM forum_ban "
259 0 : ."WHERE userID='".Data::toMysql($this->userID)."' "
260 0 : ."AND courseID IN (-1, ".Data::toMysql($courseID).") "
261 0 : ."AND (banexpire>".time() ." OR banexpire=0)";
262 0 : if(!is_array($db->get_col($sql)))
263 0 : {
264 0 : $this->news = array();
265 :
266 : //$time = $this->getPeriod($courseID, $lastvisit);
267 0 : $timefrom = $this->getPeriod($courseID, $from) ;
268 0 : $timeto = $to;
269 :
270 : // Boards auslesen, die für Studenten nicht sichtbar sind
271 0 : $boardsNotReadableByStudents = "";
272 0 : if ($usergroup == STUDENT || $usergroup == ALUMNUS || $usergroup == SCHUELER || $usergroup == GAST) {
273 0 : $viewableGalleries = $db->get_col("SELECT album_id FROM photogallery_rights WHERE usr_id='"
274 0 : .Data::toMysql($this->userID)."' AND (view=1 OR admin=1)");
275 0 : if ($db->num_rows) $viewableGalleries = "AND album_id NOT IN (".implode(",", $viewableGalleries) .") ";
276 0 : else $viewableGalleries = "";
277 0 : $results = $db->get_col("SELECT forum_groupboard.boardid "
278 : ."FROM forum_groupboard JOIN forum_board ON forum_groupboard.boardid=forum_board.boardid "
279 0 : ."WHERE accessmask LIKE '0%' "."AND is_photogallery=0 "."GROUP BY boardid "."UNION "."SELECT album_id "
280 0 : ."FROM photogallery_rights "."WHERE usr_id=0 "."AND view=0 $viewableGalleries"."GROUP BY album_id");
281 0 : if ($db->num_rows) $boardsNotReadableByStudents = "AND b.boardid NOT IN (".implode(",", $results) .") ";
282 0 : }
283 : $sql = "select b.boardid, b.is_photogallery, p.posttime, p.postlastedittime, b.boardname, t.threadtopic, p.postid, p.posttext, "
284 : ."p.userID, t.threadid, l.lastvisitedtime FROM forum_post p "
285 0 : ."LEFT JOIN forum_thread t ON (t.threadid = p.threadid) "
286 0 : ."LEFT JOIN forum_lastvisited l ON (l.boardid = t.boardid AND l.userID =".Data::toMysql($this->userID).") "
287 0 : ."LEFT JOIN forum_board b ON (b.boardid = t.boardid) "
288 : //."WHERE ( ((posttime>='$timefrom') AND (posttime<='$timeto')) OR "
289 0 : ."WHERE ( (posttime>='$timefrom') OR "
290 : //." ((postlastedittime>='$timefrom') AND (postlastedittime<='$timeto')) ) "
291 0 : ." (postlastedittime>='$timefrom') ) "
292 0 : ."AND categoryid='".Data::toMysql($courseID)."' AND boarddisabled=0 "
293 0 : ."$boardsNotReadableByStudents "
294 0 : ."ORDER BY posttime DESC";
295 :
296 0 : $posts = $db->get_results($sql);
297 0 : $postsTotal = 0;
298 0 : $boards = array();
299 0 : if ($posts != null) {
300 0 : foreach ($posts as $post) {
301 : // array: board,thread,postid ==> boardtitle,posttext,userid,posttitle
302 0 : $boards[$post->boardid]['boardName'] = $post->boardname;
303 0 : $boards[$post->boardid]['isPhotoGallery'] = $post->is_photogallery;
304 0 : $boards[$post->boardid]['threads'][$post->threadid]['threadTopic'] = $post->threadtopic;
305 0 : $boards[$post->boardid]['threads'][$post->threadid]['threadID'] = $post->threadid;
306 0 : $boards[$post->boardid]['threads'][$post->threadid]['lastVisitedTime'] = $post->lastvisitedtime;
307 0 : $boards[$post->boardid]['threads'][$post->threadid]['posts'][$post->postid]['postid'] = $post->postid;
308 0 : $boards[$post->boardid]['threads'][$post->threadid]['posts'][$post->postid]['postTime'] = $post->posttime;
309 0 : $boards[$post->boardid]['threads'][$post->threadid]['posts'][$post->postid]['postText'] = $post->posttext;
310 0 : $boards[$post->boardid]['threads'][$post->threadid]['posts'][$post->postid]['userID'] = $post->userID;
311 0 : $boards[$post->boardid]['threads'][$post->threadid]['posts'][$post->postid]['postLastEditTime'] = $post->postlastedittime;
312 0 : $this->users[$boards[$post->boardid]['threads'][$post->threadid]['posts'][$post->postid]['userID']] =
313 0 : $boards[$post->boardid]['threads'][$post->threadid]['posts'][$post->postid]['userID'];
314 0 : $postsTotal++;
315 0 : }
316 0 : }
317 0 : if ($postsTotal == 0)
318 0 : $this->news = null;
319 : else {
320 0 : $this->news["messagesPerPage"] = $db->get_var("SELECT keyvalue FROM forum_registry WHERE keyname='vars_m_amount'");
321 0 : $this->news["data"] = $boards;
322 0 : $this->news["count"] = $postsTotal;
323 : }
324 0 : }
325 0 : }
326 :
327 0 : return $this->news;
328 : }
329 : /**
330 : * @see NewsCategory
331 : */
332 : protected function echoNewsEntry($entry, $courseID, $usergroup = null)
333 : {
334 0 : if(!isset($this->dark) || !isset($entry) || !isset($courseID) || !isset($this->news["user"])) return;
335 0 : $board = $entry;
336 0 : if (count($board) > 0 && is_array($board['threads'])) {
337 : echo "<tr>"
338 : ."<td colspan='2' class='tableCellHead'>"
339 0 : .($board["isPhotoGallery"] ? "FotoForum: " : "") .Data::toHTML($board["boardName"], false)
340 0 : ."</td>"
341 0 : ."</tr>\n";
342 :
343 0 : foreach($board['threads'] as $thread) {
344 :
345 0 : $module = (($board["isPhotoGallery"]) ? "photogallery" : "forum");
346 0 : $link = PATH_TO_ROOT.$module."/showtopic.php?threadid={$thread['threadID']}&time=".$thread['lastVisitedTime'];
347 : // aus dem Foyer in einen Kurs
348 0 : if ($courseID && $courseID != $_SESSION["course"]) $link.= "&changeToCourse=$courseID";
349 : {
350 0 : $threadTopic = Data::toHTML($thread["threadTopic"], false);
351 :
352 0 : $g_DiesenThreadlesen = $this->translate->_("Diesen Thread lesen");
353 0 : $g_Lesen = $this->translate->_("Lesen");
354 :
355 0 : eval($this->forumThreadTemplate->GetTemplate());
356 : }
357 0 : if ( ! isset($postLinkExtra) )
358 0 : $postLinkExtra = "";
359 0 : foreach($thread['posts'] as $post) {
360 0 : $postLinkExtra.= "&postid=". (int)$post["postid"];
361 0 : $userLink = $this->getProfileLink($this->news["user"], $post["userID"], $courseID);
362 0 : $editInfo = ($post["postLastEditTime"] ? " <span style='font-style:italic'>(". $this->translate->_("hat den Beitrag editiert").")</span>" : "");
363 0 : if ($post["postLastEditTime"] > 0)
364 0 : $postTime = (int)$post["postLastEditTime"];
365 : else
366 0 : $postTime = (int)$post["postTime"];
367 0 : $postTime = Output::echoDate("d.m.Y H:i", (int)$post["postTime"]);
368 0 : $postText = Data::toHTML(Utilities::chopText($post["postText"], 140), false);
369 0 : if ($role = RoleArtefacts::getRoleForItem($this->myCategory, (int)$post["postid"]))
370 0 : {
371 0 : $userLink.= " (".$role->getPropertiesLink($role->getName($this->news[$post["userID"]]["gender"]), $this->translate->_("Rollen-Eigenschaften anzeigen"), true) .")";
372 0 : }
373 :
374 0 : $g_DiesenBeitraglesen = $this->translate->_("Diesen Beitrag lesen");
375 0 : $g_Lesen = $this->translate->_("Lesen");
376 :
377 0 : eval($this->forumThreadPostTemplate->GetTemplate());
378 0 : }
379 0 : }
380 0 : }
381 0 : }
382 : }
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